Polarization effects in double open-charm production at LHCb

  • Miguel G. Echevarría
  • Tomas Kasemets
  • Piet J. Mulders
  • Cristian Pisano
Open Access
Regular Article - Theoretical Physics


Double open-charm production is one of the most promising channels to disentangle single from double parton scattering (DPS) and study different properties of DPS. Several studies of the DPS contributions have been made. A missing ingredient so far has been the study of polarization effects, arising from spin correlations between the two partons inside an unpolarized proton. We investigate the impact polarization has on the double open-charm cross section. We show that the longitudinally polarized gluons can give significant contributions to the cross section, but for most of the considered kinematic region only have a moderate effect on the shape. We compare our findings to the LHCb data in the D0D0 final state, identify observables where polarization does have an impact on the distribution of the final state particles, and suggest measurements which could lead to first experimental indications of, or limits on, polarization in DPS.


QCD Phenomenology Hadronic Colliders 


Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.


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Copyright information

© The Author(s) 2015

Authors and Affiliations

  • Miguel G. Echevarría
    • 1
    • 2
  • Tomas Kasemets
    • 1
    • 2
  • Piet J. Mulders
    • 1
    • 2
  • Cristian Pisano
    • 1
    • 2
    • 3
  1. 1.Nikhef Theory GroupAmsterdamThe Netherlands
  2. 2.Department of Physics and AstronomyVU University AmsterdamAmsterdamThe Netherlands
  3. 3.Department of PhysicsUniversity of AntwerpAntwerpBelgium

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